Pipe-coupling



. grant UNITED t STA-TES PATENT OFFICE.

ROBERT HALE, or noXnUEY, MAssAcnUsETTs` To all whom it may concern,.-

Be it known that l, ROBERT HALE, of Roxbury, in the county of Norfolk and. State of Massachusetts, have invented an Improved4 Pipe-Coupling, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, making part'of this specification, in which- Figure l isa view of my improved coupling connect-ing two short sections A and'B of india-rubber water-pipe; Fig. 2, a longitudinal section through the same; Figs. 3, 4, and 5, details to be referred to.

The object of my present invention is to l produce a cheap and convenient coupling-for water and other pipes, which is simple and `easy of application; and my invention consists of the hollow coupling C, (shown in the drawings,) which is intended to be slipped over the abutting ends of two pieces of pipe, and is'thenxto be filled with some suitable cement, (such as sulphur or hydraulic cement,) which can be poured into it through a hole made for the purpose, and will then set or become solid and hold the ends of the pipes in position. j

I am awarethat cement and also lead solder have been poured around the joint where .the bell-coupling has been used-that is, where the end of one pipe is entered into a bell or enlargement formedv on the end of the other pipe-and kalso that the v-bell or enlargement has been ca'st with a recess, into which cement or solder was poured after the ends of the pipes were brought togetherto hold them. I wish, however, to avoid the necessity of having the end of either piece of pipe made of any particular form, as this adds to the ex pense of the manufacture ofthe pipe, and in some cases, as with the india-rubber conducting water-pipe, for which Letters Patent were s not practicable, andI wishto make and good joint in' any position where "ds of two pieces of plain pipe are 1t together end to end. i

t others skilled in the art may underand use my invention, I will proceed to be the manner in which I have carried ed to Charles McBurney January 11,'

In the said drawings, A and I3 represent two pieces of conducting water-pipe, the ahuttin g ends (t l) of which are cutoff square and are brought together at d within the shell or coupling C. This coupling is castof any suitable metal, as of iron or brass, and of such a form and size that while it fits closely to the pipe vat the part wherethe pipe is inserted in it, as

at c, Figs. 1 and 2, there may be a sufficient space between the two ends of the pipes at their joint d and the shell to receive a sufficient quantity of the cement used to render the joint tight and firm.` The form of the shell will vary with the kind of pipe t'o which it is applied, the kind of .cement used, and the nature of the strain to which the joint is expected to be subjected. The spherical form' shown in the drawings I have found to answer in most cases, though the. space f, into which the cement is poured through the hole 2f, is larger than will generally be required. Where a considerable strain is to be applied to the pipesA and B, tending to pull them away from` each other, the pipes may be grooved or roughened near the end, as at m,

to give the cement a-better hold. There the axes `of the two pipes do not coincide, `the form of the shell C must be Varied. For example, in Fig. 3 the two pipes are at right angles and abut with a ruiter-joint m or where the pipes are` to be connected in a vertical position to hole through which the cement is to be poured they may be near one end of the shell, as at o, Fig. 3.

There are many positions in which my im'- i proved pipe-coupling will be found to be very conveniente-for example, in mending water .or gas pipes which have burst-as the pipe may be cut 0E square and the two ends be to form a lip or projection around the hole 11,

Vas in Fig. 5, for the greater convenience of introducing the cement. Where this coupthe pipe at its ends and having a hole c', ling is applied vto plumbers lead pipes, the 4through which cement or other packing is spacej may be filled with lead or solder. `introduced. into the space f, as set forth.

What'I claim as my invention, and desire ROBT. HALE. to secure by Letters Patent, is Witnesses:

The above-described coupling C for con- THOS. R. ROACH,

ducting-pipes, the coupling fitting closely to P. E. TESCHEMACHER. 

